Question $5$ of $6$

Calculate the missing values and express your answers rounded to two decimal places.

$\backslash$table$[[,$Cost,$\backslash$table$[[$Amount of$],[$Markup$]],\backslash$table$[[$Selling$],[$Price$]],\backslash$table$[[$Rate of Markup$],[$on Cost$]],\backslash$table$[[$Rate of Markup$],[$on Selling Price$]]],[$a$.,,$$$260\mathrm{.}00,25\mathrm{.}00\%,\%,],[$b$.,$$$54\mathrm{.}00,$$$0\mathrm{.}00,,,]]$